Kiyoharu Suirenji is a fair-skinned girl with short blonde hair, usually tied with a pink or red ribbon, and light blue eyes. She wears a school uniform: a short-sleeved shirt with a bow, a chocolate-brown plaid skirt, long white stockings, and black shoes. Activating her magic transforms the tips of her hair to a pink-purple hue and causes blood to flow from her scalp down her forehead. Outwardly upbeat, cheerful, and sociable, Kiyoharu shows genuine care for companions like Kosame Amagai, fiercely defending them. She displays enthusiasm for pop culture, including the idol group Dog's Play, and reacts excitedly to meeting Nijimi Anazawa. Beneath this exterior lies a vengeful determination; she privately plans retaliation against her bullies only after they find happiness, intending to "throw them from paradise into hell." She possesses a strong sense of justice and loyalty to friends, sharing a trusting relationship with her mother, the first person she confided in about her gender identity. Kiyoharu is notably cunning, frequently using her telepathic powers to covertly read thoughts for strategic gain, such as assessing allies' lifespans or orchestrating mind-control schemes without group consensus. Severe bullying at school, due to being transgender, subjected Kiyoharu to physical assaults, verbal abuse, online harassment, and theft, with her teacher ignoring or encouraging the behavior. This suffering led her to receive a magical ring-shaped stick from the Mahou Shoujo Site, confirming magical girls can be chosen regardless of biological sex. Her mother was killed by the administrator Kyu, though Aya Asagiri later reversed this using time-rewinding abilities. The bullies and teacher were eventually punished by school authorities, preventing further misery for Kiyoharu and altering the timeline where she received her powers. Her primary ability is telepathy through her ring-shaped stick, bearing an "S" emblem. This allows her to link with others' sensory systems, remotely control bodies, experience their senses, read minds, and communicate instantly with fellow magical girls across distances. She later wields the Teddy Bear Stick's laser beams, powered by her own negative energy, to attack the King directly. Kosame Amagai also grants her the Breathing Bubble ability via the Sports Cap Stick, creating an oxygen barrier for airless environments. After Tsuyuno Yatsumura's death, Kiyoharu serves as Aya Asagiri's voice, relaying her thoughts telepathically while Aya is mute from trauma. Kiyoharu participates in pivotal battles against the King, contributing strategically alongside other magical girls. Her personal focus shifts from vengeance to protective actions, especially towards Kosame, though her tactical deception sometimes strains group trust. Her birthday is November 12, making her a Scorpio. She fears insects and ghosts, with hobbies including fashion, shopping, and taking selfies. Her name combines "clear, pure" (清) and "spring" (春) for Kiyoharu, and "water" (水), "lotus" (蓮), and "temple" (寺) for Suirenji.